Method and apparatus for producing curled or crimped glass wool



May 21, 1935 PQ o. E. FRIEDRICH 2,002,314

METHOD AND APPARATUS FOR PRODUCING'CURVLED 0R CRIMPED GLASS WOOL FiledJan. 26, 1934 ,nieuwe May 21, 193s UNITED 4STATES METHOD AND APPARATUSFOR PRODUC- lNG CURLED OB. CRDIPED GLASS WOOL Paul o. E. Friedrich,Millville, N. J., assignmu firm Friedrich & Dimmock, New York, N. Y., a.firm composed of Paul 0. E. Friedrich and Frank L. Dimmock ApplicationJanuary 26,

Claims.

This invention relates to a method and apparatus for producing curled orcrimped glass wool and has for an object to provide an improved methodand apparatus for taking a iiat sheet of 5 glass thread and permanentlycurling, crimping a plurality of permanently waved, curled or4 crimpedstrands of glass wool.

A further object of this invention is to provide an apparatus forpermanently waving a fiat-sheet of glass thread and an adjustablecutting means for dividing the flat sheet into a plurality of strandsjust as it is being fed through the curling, crimping or waving means.

With the foregoing and other objects in view, as will hereinafter becomeapparent, this invention comprises the constructions, combinations andarrangements of parts hereinafter set forth, disclosed and shown on theaccompanying drawing. In the drawing,

Figure 1 is a front view of the invention,

Figure 2 is a rear view of the invention. and

Figure 3 is avsectional v'iew taken on line 3-3 of Figure 2.

There is shown at I0 the apparatus constituting this invention, theapparatus I0 being mounted or supported on any suitable space II.

'I'he apparatus Ill comprises a pair of supporting frame members I2 andI3 secured to the base Il as by bolts I5, and secured to each other by apair of rods I6 and I1. A pair of interweaved corrugating rolls I8 andI9, mounted on shafts 29 and 2| are supported in interweaving contactone above the other by means of suitable bearings 22 extending throughthe frame I2 and I3. Gear wheels 23 and 24 keyed onthe shafts 20 and 2|are meshed with each other so as to insure the same rate of rotation ofboth rolls I8 and I9, it being observed that the gear wheels 23 areprovided with the same number of teeth as the roll I8 is provided withcorrugations, and likewise that gear wheels 24 are provided with thesame number of teeth as there are corrugations on the roll I9, thusinsuring that the corrugations on the rolls I8 and I9 will alwaysproperly interweave with each other.

In order to provide rotationl of the rolls I8 and I9 one of the shafts,as for instance the lower shaft 20 is extended at one side and providedwith a grooved wheel 25, which is rotated by a belt 26 from any suitablesource of power. Suitable means for heating the rolls I8 and I9 areprovided and preferably consists of a plurality of gas jets 21and 28placed in gas pipes 29 and 39 1934, Serial No. 708,529

supported by the frame members I2 and I3, it being observed that the gasjets 21 are placed below and closely adjacent the lower corrugating rollI8, and that gas jets 28 are placed above and closely adjacent the uppercorrugating roll I9. The ames from the gas jets 21 and 28 are thus in aposition to heat the corrugating rolls I8 and I9 while the same are inoperation.

A table 3| is provided for feeding a at sheet of 'glass thread throughthe corrugating rolls I8 and I9, one edge of the table 3| terminatingclosely adjacent the interweaving linesof contact between the rolls I8and I9. The table 3| is supported on the frame members I2 and I3 bymeans of a pair of angulars 32 on the upper rod I1 and apair of braces33 on the lower rod I6. A rod 35 triangular in' cross section issupported on the frame members I2 and I3 below the table 3| and adjacentthe edge 34 nearer the corrugating rolls I8 and I9.

One face of the rod 35 is provided with a plurality of short knifeblades 36 and the table 3| is provided with a corresponding plurality ofslots 31. The end of the rod 35 is provided with a lever 38. Manualmovement of the lever 38 to the position 38' moves the knife blades 36through the slots 31 to the position 36', thereby dividing f the flatsheet of glass thread -40 into a plurality of individual strands just asthe sheet 40 is about to be fed in between the corrugating rolls I8 andI9. I

The method of operation is as follows:

Flat sheets of glass thread 4I! of predetermined lengths are placed onthe table 3|. The lever 38 is placed in the position 38 thereby bringingthe knife blades 36 through the slots 31 to the position 31 and dividingthe flat sheet of glass thread 40 into a plurality of individualstrands, the width of the individuall strands being determined by thespacing between the blades 36 and the slots 31.v

The individual strands, each strand consisting of a group of threads,are then fed through the interweaving lines of contact between the rollsI8 and I 9, the gas jets 21 and 28 having been lighted previously so asto bring the rolls I8 and I9 to the desired temperature and to maintainthem at this desired temperature. As the strands pass between the rollsI8 and I9, the corrugations on the rolls I8 and I9 press alternately onopposite sides of the strands, and these corrugations being heated theymomentarily soften the threads of the individual strands, whichimmediately reharden again so as to permanently retain the curved,crimped or curled shape as shown at 42..

V crimped glass wool, comprising a pair of inter.

Thus `the apparatus and method just described takes a at sheet of glassthread and produces a plurality of permanently waved, curled, crimped orcorrugated individual strands of glass wool.'

The novel features and the operation of this device will be apparentfrom the foregoing description. While the device has been shown and thestructure described in detail, it is obvious that this is not to beconsidered limited to the exact form disclosed and that (any changes may`be made therein within the scope of what is claimed Without departingfrom the spirit of the invention.

Having thus set forth and disclosed the nature of this invention, whatis claimed is:

-1. In a method of producing curled or crimped strands of glass wool,the steps of longitudinally dividing a flat sheet of glass wool into aplurality of strands, and of imparting a permanent wave formation to thedivided strands.V

2. A method of producing curled or crimped strands of glass wool,consisting in simultane ously dividing a at sheet of glass thread into aplurality of strands longitudinally of the threads, corrugating thedivided strands simultaneously by applying pressure alternately toopposite sides of the strands, and simultaneously applying heat tovsaiddivided strands Aas the pressure is being,

applied whereby the divided individual strands will retain a permanentwave formation.

3. An apparatus for producing` curled or weaved corrugated rolls, meansfor rotating said corrugated rolls, means for heating saidcorru gatingrolls as said rolls are being rotated, a frame for supportingl saidcorrugating rolls. said heating means and said rotating means, a table`for feeding a flat sheet of glass thread through said corrugating roll,one edge ofA said table being adjacent lthe interweaving lines ofcontact between said roll, said table being supported on` said frame,and means cooperating with said table adjacent and preceding saidinterweaving lines of contact, dividing the at sheet of glass threadinto a plurality of strands.

aooasm 4. An appamtls for producing curled or crimped glass wool,comprising a pair of interweaved corrugated rolls, means for rotatingsaid corrugated rolls, means for heating said corrugating rolls as saidrolls are being rotated; a frame for supporting said corrugating rolls,said heating 4means and said rotating means, a table for feeding aflatsheet of glass thread through said corrugating roll, one edge ofsaid table being adjacent the interweaving lines of contact between saidroll, said ltable being supported on said frame, means cooperating withsaid table adjacent and preceding said interweaving lines of contact,dividingthe flat sheet of glass thread into a plurality of strands, saidmeans compris-A ing a rod supported on said frame, a plurality oflongitudinal slots extending through said table,v a. plurality of knifeblades on said rods, and means for adjusting said rods to cause saidknife blades to extend through saidslots.

5. An apparatus for producing curled or crimped glass wool, comprising apair of interweaved corrugated rolls, means for rotating saidvcorrugated rolls, means for heating said corrugating-rolls as saidrolls are being rotated, a frame for supporting said corrugating rolls,said heating means and said rotating means, a table for feeding afiat'sheet vof glass thread through said corrugating roll, one edge ofsaid table being adjacent the interweaving lines of contact between saidroll, said table being supported on said frame, means cooperating withsaid table adjacent and preceding. said interweaving vlines f contact,dividing the fiat sheet of glass thread -into a plurality of strands,said means comprising a rod supported on said frame, a plurality oflongitudinal slots extending through said table, a plurality of knifeblades on said rods, and means for adjusting said rods to cause saidknife blades to extend through said slots, said -xneans comprising alever secured 'to said rod exterior of said frame.

PAUL O. E, FRIEDRICH.

